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東芝PFC控制IC的優勢和應用

CRM PFC Control IC: TB6819AFG

PFC控制IC除基本功能外,還具有欠壓保護功能。
當MULT端子電壓下降時,IC變為待機模式,並有助於降低系統的待機功耗要求。

Purposes of PFC Control

Reducing harmonic current

IC控制交流輸入電流,因為交流輸入電壓和電容器充電電流相似。
由於負載似乎是交流電源系統的“電阻”,因此這是偽裝的。
而且,它會失去產生更高諧波的電容器充電電流的衝擊。

This figure shows an example of using PFC Control ICs.
(Application Example)
This figure shows an example of current waveforms before and after harmonic current reduction.
Current Waveforms

Power-saving

This figure shows how power reduction is achieved with PFC control.
  • 通過減少電流的諧波含量來提高功率因數。

穩定交流輸入。

  • 穩定PFC電流。
    使電源電路能夠持續提供接近完美的正弦電流。.
CRM Critical Conduction Mode (TB6819AFG)
・Suitable for power levels below 200 W
・Relatively simple circuit

Development / Design Support

Downloading PSpice® models

Product File Type PSpice Download Type Features Publish Date
TB6819A zip (49KB) PFC Controller IC Critical conduction mode (CRM) PFC controller IC 2015/08/25

* PSpice is a registered trademark of Cadence Design Systems, Inc.

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